.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.auth-box{background:#fff;padding:40px;border-radius:10px;width:100%;max-width:400px;box-shadow:0 10px 40px #0003}.auth-box h1{text-align:center;margin-bottom:30px;color:#333}.auth-box input{width:100%;padding:12px;margin:10px 0;border:2px solid #ecf0f1;border-radius:6px;font-size:14px}.auth-box input:focus{border-color:#667eea;outline:none}.auth-box button{width:100%;padding:12px;margin:10px 0;background:#667eea;color:#fff;border:none;border-radius:6px;cursor:pointer;font-weight:600}.auth-box button:hover{background:#764ba2}.error{color:#e74c3c;text-align:center;padding:10px;background:#ffe5e5;border-radius:6px;margin:10px 0}.transfer-container{padding:40px;max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:30px}.upload-section,.files-section{background:#fff;padding:30px;border-radius:10px;box-shadow:0 5px 20px #0000001a}.upload-section h2,.files-section h2{margin-bottom:20px;color:#333}.file-input{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;border:2px dashed #667eea;border-radius:8px;cursor:pointer;background:#f8f9ff}.file-input input{display:none}.file-input:hover{border-color:#764ba2;background:#f0f2ff}button{padding:10px 20px;background:#667eea;color:#fff;border:none;border-radius:6px;cursor:pointer;font-weight:600}button:hover{background:#764ba2}button:disabled{opacity:.5;cursor:not-allowed}.files-list{display:flex;flex-direction:column;gap:12px}.file-item{display:flex;justify-content:space-between;align-items:center;padding:15px;border:1px solid #ecf0f1;border-radius:8px;background:#f9f9f9}.actions{display:flex;gap:10px}.actions button{padding:8px 12px;font-size:12px}.success{color:#27ae60;background:#e5ffe5;padding:10px;border-radius:6px}.error{color:#e74c3c;background:#ffe5e5;padding:10px;border-radius:6px}@media (max-width: 768px){.transfer-container{grid-template-columns:1fr}}.app{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.app-header{background:#0000001a;color:#fff;padding:20px;display:flex;justify-content:space-between;align-items:center}.app-header h1{font-size:24px;margin:0}.logout-btn{background:#e74c3c;color:#fff;padding:8px 16px;border:none;border-radius:4px;cursor:pointer}.logout-btn:hover{background:#c0392b}*{margin:0;padding:0;box-sizing:border-box}body{font-family:sans-serif;background:#f5f5f5}